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Finding the Fourth Proportional to 570,618.23, 787,443.51 and 315,963.95

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Solution

The fourth proportional to 570,618.23, 787,443.51 and 315,963.95 is: 436,024.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    570,618.23 : 787,443.51 = 315,963.95 : x
  2. Step 2: Convert to fraction form
    570,618.23/787,443.51 = 315,963.95/x
  3. Step 3: Cross multiply
    570,618.23x = 787,443.51 × 315,963.95
  4. Step 4: Simplify right side
    570,618.23x = 248,803,761,821.47
  5. Step 5: Solve for x
    x = 248,803,761,821.47/570,618.23
  6. Step 6: Final answer
    x = 436,024.91

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.